1. Discount- how much money is SAVED from original price
Discount, Sale Price
Original Price- the cost of the item before the discount is taken off
Discount- how much money is SAVED from original price
Sale Price- the price after the discount is taken
Also referred to the discount price

2. A shirt is priced at 49. 99 and on sale for 20% off
A shirt is priced at and on sale for 20% off. What is the sale price?
49.99
Original price
Steps
List original price and label it
change % to a decimal and multiply by original price to get discount
subtract discount from original price to get sale price
X .20
9.9980
49.99 original
9.99 discount
40.00 sale price

3. I want to buy a pair of CLEAR shoes for 79
I want to buy a pair of CLEAR shoes for and it is on sale for 25% off. Find the discount and sale price
original price
X .25
79.99 original price
discount
sale price

4. I want to buy a shirt for 29. 99 and pants for 39. 99
I want to buy a shirt for and pants for Both are on sale for 33% off. Find the discount and sale price
There are 2 ways to do this
do each item separately
add both items then take discount
shirt
pants
69.98
X .33
sale price
discount
sale price

5. We are buying an ipod 129. 99 on sale for 20% off
We are buying an ipod on sale for 20% off. We also buy the skin for it on sale for 30% off. What is the sale price that I pay?
This one has to be done separately
Think that it should look like a receipt from any store
129.99
orig
19.99 orig
x.20
x.30
discount
5.9970
discount
orig
dis
19.99 orig
dis + sp
14.00 sp
sale price

6. Now let’s talk about tax
The type of tax we are going to use is called sales tax
It is the amount of money ADDED to the sale price
It is usually a different rate in every city

7. A jacket is 99. 99 and on sale at 25% off. The tax is 8%
A jacket is and on sale at 25% off. The tax is 8%. Find the discount, sale price and the total
99.99 original price
x .25
discount
original price
discount
sale price
X .08
6.00 tax
75.00 sale price
tax
81.00 total
To do tax
Change % to a decimal
Multiply to sale price to get tax
This is also called subtotal which means the total before tax
3.Add tax to sale price
to get total

8. A dvd player is 49.99 and on sale for 25%
off. A home theater system is and
also on sale for 30% off. Tax is what you pay
in your area. What is the discount, sale price,
tax, and total for this purchase?
49.99 original price
original
x .30
x .25
discount
discount
original
discount
original
discount
sale price
sale price

9. 280.00 sale price of home theater system
sale price of dvd player
subtotal
For this problem we
did 7 different problems
to get this answer
subtotal
X tax rate
23.10 tax
subtotal
tax
total

10. SIMPLE INTEREST
The amount of EXTRA money that someone charges or receives
Used in the real world talking about loans, credit cards or savings accounts
Joe wants to buy a television. The tv costs
$900. Since he does not have the cash to buy it he uses a credit card. The card charges 13% interest. How much will Joe have to pay total for the television?

11. Formula I = PRT Interest= principal times rate times the time
Principal- amount of $ either borrowed
or saved
Rate- the interest rate is the %

12. Joe wants to buy a television. The tv costs $900
Joe wants to buy a television. The tv costs $900. Since he does not have the cash to buy it he uses a credit card. The card charges 13% interest for 1 year. How much will Joe have to pay total for the television?
Write the formula then replace the letters with numbers and solve
I = PRT

13. I = PRT I = 4400(3%)(2) I= 4400(.03)(2) I= 8800(.03)
I bought furniture for 2800, 1000 for the chair and 600 for the ottoman. They have a special interest for 2 years at 3%.
What is the total someone would pay?
Write formula……
I = PRT
Replace the letters with numbers and solve
I = 4400(3%)(2)
I= 264
Total = I + P
I= 4400(.03)(2)
to find total we add interest
To the principal
Total =
I= 8800(.03)
Total = 4664

14. COMMISSION
used in the real world in sales when a salesperson gets a percentage of what they sell
the more they sell the more they make
Examples of people who work on commission are ….
Selling cars, houses, jewelry and other expensive items

15. A salesman sells a camcorder for $999
and gets 8% commission. How much does
he make?
To do
Price times commission % to get commission
999
.08
7992 .

16. QUIZ 112.32 Price before the tax 850.65 16 2/3 60.50
1. A jacket is and on sale for 20% off. Tax is 8%. What is the total?
2. What is the subtotal?
3. Find the total for a tv for and on sale for 20% off and a dvd for with 25% off. Tax is 7%
4. A piece of wood is 12 ½ ft long. How many ¾ pieces are cut from it?
5. A shirt for and on sale for 40% off, a belt for and on sale for 25% off and a pair of clear shoes for for 30% off. What is the total price?
112.32
Price before the tax
850.65
16 2/3
60.50